Home / 11,133.37-15,379.05-8,911.14

Finding the Fourth Proportional to 11,133.37, 15,379.05 and 8,911.14

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Solution

The fourth proportional to 11,133.37, 15,379.05 and 8,911.14 is: 12,309.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,133.37 : 15,379.05 = 8,911.14 : x
  2. Step 2: Convert to fraction form
    11,133.37/15,379.05 = 8,911.14/x
  3. Step 3: Cross multiply
    11,133.37x = 15,379.05 × 8,911.14
  4. Step 4: Simplify right side
    11,133.37x = 137,044,867.62
  5. Step 5: Solve for x
    x = 137,044,867.62/11,133.37
  6. Step 6: Final answer
    x = 12,309.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.